.notification {
    position: fixed;
    top: -60px;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    text-align: center;
    transition: top 0.5s, background-color 3s;
    z-index: 9999;
}

.notification.success {
    background-color: #4CAF50;
}

.notification.warning {
    background-color: #f44336;
}